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" It is by reflected rays only that we see opaque objects. Luminous bodies send rays of light immediately to our eyes, but the rays which they send to other bodies are invisible to us, and are seen only when they are reflected or transmitted by those bodies... "
Book of lessons for the use of schools - Page 358
by Ireland commissioners of nat. educ - 1835
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Conversations on Natural Philosophy: In which the Elements of that Science ...

Mrs. Marcet (Jane Haldimand) - Physics - 1821 - 350 pages
...reflected more obliquely, preserving the equality of the angles of incidence and reflection. Mrs. B. It is by reflected rays only that we see opaque objects....bodies are invisible to us, and are seen only when they are reflected or transmitted by those bodies to our eyes. Emily. But have we not just seen the...
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Conversations on Natural Philosophy: In which the Elements of that Science ...

Mrs. Marcet (Jane Haldimand) - Physics - 1821 - 366 pages
...the equality of the angles of incidence and reflection. opaque objects. Luminous bodies send rays ol light immediately to our eyes, but the rays which...bodies are invisible to us, and are seen only when they are reflected or transmitted by those bodies to our eyes. Emily. But have we not just seen the...
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Conversations on Natural Philosophy: In which the Elements of that Science ...

Mrs. Marcet (Jane Haldimand), John Lauris Blake - Astronomy - 1826 - 308 pages
...reflected more obliquely, preserving the equality of the angles of incidence and reflection. Mrs. B. It is by reflected rays only that we see opaque objects....eyes, but the rays which they send to other bodies are inrisible to us, and are seen only when they are reflected or transmitted by those bodies to our eyes....
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Conversations on Natural Philosophy: In which the Elements of that Science ...

Mrs. Marcet (Jane Haldimand), Thomas P. Jones - Physics - 1826 - 286 pages
...rays only, that we see opaque objects, ^uminous bodies, send rays of light immediately to mtr eyes^ut the rays which they send to other bodies, are invisible to us, and are seen, only when they are reflected by those bodies, to our eyes. Emily. But have we not just seen the ray of light,...
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Natural Philosophy: With an Explanation of Scientific Terms, and ..., Volume 2

Physics - 1832 - 640 pages
...will be equal. It is by reflected rays only that we see opaque objects. Luminous • See Mechanics. bodies send rays of light immediately to our eyes...reflected or transmitted by those bodies to our eyes. Yet it may be observed that the ray of light on its passage from the sun to the mirror, and its reflection,...
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Library of Useful Knowledge: Natural philosophy, Volume 2

1832 - 650 pages
...will be equal It is by reflected rays only that we see opaque objects. Luminous • See Mechanics. bodies send rays of light immediately to our eyes...us, and are seen only when reflected or transmitted hy those bodies to our eyes. Yet it may be observed that the ray of light on its passage from the sun...
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Conversations on Natural Philosophy: In which the Elements of that Science ...

Mrs. Marcet (Jane Haldimand) - Physics - 1837 - 358 pages
...reflected more obliquely, preserving the equality of the angles of incidence and reflection. Mrs. B. It is by reflected rays only that we see opaque objects. Luminous bodies send rays of light immfidiately to our eyes, but the rays which they send to other bodies are invisible to us, and are...
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Light: its properties and effects

Light - Astronomy - 1838 - 298 pages
...reflected and rebound like an elastic ball when it is struck against a wall. It is by reflected rays alone that we see opaque objects. Luminous bodies send rays...immediately to our eyes ; but the rays which they transmit to other bodies are invisible to us, and are beheld only when they are reflected to our eyes...
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Conversations on natural philosophy, by the author of Conversations on chemistry

Jane Marcet - 1839 - 544 pages
...reflected more obliquely, preserving the equality of the angles of incidence and reflection. MRS. B. It is by reflected rays only that we see opaque objects....bodies are invisible to us, and are seen only when they are reflected or transmitted by those bodies to our eyes. EMILY. But have we not just seen the...
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Light: Its Properties and Effects ...

Religious Tract Society (Great Britain) - Astronomy - 1840 - 444 pages
...reflected, and rebound like an elastic ball when it is struck against a wall. It is by reflected rays alone that we see opaque objects. Luminous bodies send rays...immediately to our eyes ; but the rays which they transmit to other bodies are invisible to us, and are beheld only when they are reflected to our eyes...
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